Without dole or sorrow; not sorrowful, joyful, or free from grief (archaic or rare).
From dole (sorrow) + -less (suffix meaning without). A rare negative formation that would indicate the absence of sorrow, though it never became common in English.
Most people would just say 'cheerful' or 'happy' rather than 'doless'—this shows how English prefers positive words over negative constructions, which is why 'happy' survived but 'doless' vanished into obscurity.
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